Slide 2: actuator (a mechanism that puts something into automatic action) Spindle(any of various rotating shafts that serve as axes for larger rotating parts) Platters similar to compact discs to display photographs, moving video, computer data and printed text. Hard Disk Drives(HDD) : Hard Disk Drives(HDD) HARD DISK DRIVE
“Hard disk is a magnetic disk storage device that stores digital data on rotating magnetic surfaces. These are permanently mounted or "fixed" in the system and are not removable like floppy disks. The computer’s operating system and other software are installed on the hard disk. Since, the disk and the drive are usually contained in the same unit, hard disk is also known as "hard drive". Hard disks store more data and provide quick access to large quantities of data than floppy disks. Hard disks are needed to be formatted before they can store data. “Function:
The hard drive is a permanent storage space for data and the programs that are used to create the data. The hard drive store all the computer files. HARD DRIVE SLOW MOTION : HARD DRIVE SLOW MOTION What are the types of methods by which Hard drives are attached to computers ? : What are the types of methods by which Hard drives are attached to computers ? ? 01010101010111110000 IDE or ATA : IDE or ATA Transfer rate: from 3 MB/s to 133 Mb/s Serial ATA : Serial ATA SATA1:150MB/sSATA2:300MB/sSATA3:600 MB/s Transfer rate: SCSI(Small Computer System Interface) : SCSI(Small Computer System Interface) SCSI: 320 MB/s Transfer rate: SOLID STATE HARD DRIVES : SOLID STATE HARD DRIVES SSD: from 72 to 236 MBps Transfer rate: Slide 12: SOLID STATE COST
TIGER DIRECT SHOP COMPARE PRICES: Where did my files go? : Where did my files go? How to protect hard drive data? : How to protect hard drive data? Data Recovery Slide 15: How to Choose a Hard Drive?